The Modelling Of Landslide Hazards Using Gis

Slope instability hazard assessment is based on theanalysis of the terrain conditions at sites whereslope failures occurred in the past. For the analysisof the causative factors the application of geographicinformation systems (GIS) is an essential tool in thedata analysis and the subsequent hazard assessment.Three scale levels of hazard mapping are defined – adirect experience-driven mapping at reconnaissancelevel, a statistical approach to determine thecausative factors in a quantitative susceptibilitymapping, and a methodology at large scale making use ofdeterministic models.